isocercal

adjective iso·cer·cal

Definition of isocercal

1 :having symmetrical upper and lower lobes and a gradually tapering vertebral column used of the tail fin of a fish
2 :having or relating to an isocercal tail fin

isocercy

\-rkē\ noun, plural -es

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Origin and Etymology of isocercal

is- + -cercal


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